---
id: CVE-2021-47644
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  media: staging: media: zoran: move videodev alloc

  Move some code out of zr36057_init() and create new functions for handling
  zr->video_dev
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  media: staging: media: zoran: move videodev alloc

  Move some code out of zr36057_init() and create new functions for handling
  zr->video_dev. This permit to ease code re…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-401
  - CWE-401
vendor: linux
product: linux_kernel
affected:
  - linux_kernel < 5.10.110
  - 'linux_kernel >= 5.11, < 5.15.33'
  - 'linux_kernel >= 5.16, < 5.16.19'
  - 'linux_kernel >= 5.17, < 5.17.2'
patched:
  - linux_kernel 5.17.2
published: '2025-02-26'
updated: '2026-08-11'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2021-47644'
references:
  - url: 'https://git.kernel.org/stable/c/1e501ec38796f43e995731d1bcd4173cb1ccfce0'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/8dce4b265a5357731058f69645840dabc718c687'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bd01629315ffd5b63da91d0bd529a77d30e55028'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c1ba65100a359fe28cfe37e09e10c99f247cbf1e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ff3357bffd9fb78f59762d8955afc7382a279079'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00254
epssPercentile: 0.15041
ingestedAt: '2026-08-11T16:47:03.437Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

media: staging: media: zoran: move videodev alloc

Move some code out of zr36057_init() and create new functions for handling
zr->video_dev. This permit to ease code reading and fix a zr->video_dev
memory leak.

## Affected

- `linux_kernel < 5.10.110`
- `linux_kernel >= 5.11, < 5.15.33`
- `linux_kernel >= 5.16, < 5.16.19`
- `linux_kernel >= 5.17, < 5.17.2`

## Remediation

Upgrade past the affected range:

- `linux_kernel 5.17.2`